Home / 5,186.40-7,775.64-2,591.16

Finding the Fourth Proportional to 5,186.40, 7,775.64 and 2,591.16

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Solution

The fourth proportional to 5,186.40, 7,775.64 and 2,591.16 is: 3,884.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,186.40 : 7,775.64 = 2,591.16 : x
  2. Step 2: Convert to fraction form
    5,186.40/7,775.64 = 2,591.16/x
  3. Step 3: Cross multiply
    5,186.40x = 7,775.64 × 2,591.16
  4. Step 4: Simplify right side
    5,186.40x = 20,147,927.34
  5. Step 5: Solve for x
    x = 20,147,927.34/5,186.40
  6. Step 6: Final answer
    x = 3,884.76

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.